Death walker

[AtW]

10 hours of proper use is acceptable, once they get to 15-20 it would be more or less superb.

 

[Sysman]

10 hours of proper use is acceptable, once they get to 15-20 it would be more or less superb.

Once they get to about 40 hours they'll match my old Psion 3.

 

[Cliphead]

Once they get to about 40 hours they'll match my old Psion 3.

Ooh, I had one of those.

 

[TimberWolf]

Ooh, I had one of those.

My Casio calculator still has it's original battery, which is over 20 years old now.

Re the iPad2. Battery capacity is rated at 90 kJ according to the Wiki and another source I found. If 90,000 J is to last 10 hours (10*3600 = 36,000 seconds), that's 2.5W. 2.5W to run screen, processor & WiFi/phone. Not.

 

[AtW]

2.5W to run screen, processor & WiFi/phone. Not.

Well, it works according to multiple trusted sources.

CPU is most certainly is idle most of the time and use very little power - screen probably uses most of power, who cares if it all works nicely in one package? The only thing I hate in principle is tulipy iTunes thing - last time I installed it on my PC it started crashing it.

 

[TimberWolf]

Well, it works according to multiple trusted sources.

CPU is most certainly is idle most of the time and use very little power - screen probably uses most of power, who cares if it all works nicely in one package? The only thing I hate in principle is tulipy iTunes thing - last time I installed it on my PC it started crashing it.

First thing I will do if I were to buy one is check out whether the iPad[n] will run without a PC (i.e. iTunes), because it would be a gift for parents who don't own a PC. iTunes crashes for me now and then (& currently needs reinstalling as it gives an error when I connect my iPod), but it hasn't yet crashed my machine. I tolerate it and it sort of works.

iPad 2′s maximum brightness, black level and contrast ratio were also noted by Soneira as excellent and very good. The research also confirmed that the only disadvantage of iPad 2′s larger screen is its 2.7 watts consumption
iPad 2 (not iPad 3) LCD “identical” to iPhone 4 retina display?

Impressive power usage at 2.7 watts on maximum brightness. Apple iPad 2 and iPhone 4 LCD Display Shoot-Out

I found some games affect battery power consumption greatly (as does internet use), and even make my iPod Touch warm to the touch.